Wrench.



No. 864,710. PATBNTED AUG. 27,1907. o. s. VAUGHN. WRENCH.

APPLIOATION FILED DBC. 17,1908.

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No. 864,710.l PATENTED AUG. 27, 1907.

` o. s. VAUGHN.

WRENCH.

APPLIGATION FILED DEo.1'1,19oe.

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gnucufoz GYRUS S. VAUGHN, OF UNION HILL, NEW JERSEY.

WRENCH.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed December 17,1906. Serial No. 348,229.

To all whom it may concern:

Be it known that I, CYEUs S. VAUGHN, a citizen of the United States,residing at Union .l-lill, in the county ol Hudson, State o New Jersey,have invented certain new and useful Improvements in Wrenches; and I dohereby declare the following to be a iull, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and .use the same.

lt is the purpose of this invention to provide improvements in open endWrenches in which the jaws are made adjustable.

The nature ol' the invention is clearly disclosed by the deviceportrayed in the annexed drawings, forming a part ol this specification,in view ol which the invention will irst be described with respect toits construction and inode of use, and then be pointed out in thesubjoined claim.

Oi the said drawings-Figure 1 is an edge elevation. Fig. 2 is a sideelevation, a part being represented as broken away. Fig. 3 is a sideView of the adjustable jaw detached. Fig. 4 is a horizontal section inthe plane 4 4, Fig. 2.

Similar numerals oi reference designate similar parts or features, asthe case may be, wherever they occur.

ln the drawings 10 designates the iixed or rigid jaw on the head l1 withwhich the handle l2 of the wrench is integrally Connected.

13 designates the adjustable jaw provided with a screw threaded shank 14extending forward at an angle oi ninety degrees to its face 15. Thelower portion-16 oi the jaw is rounded corresponding to the rounded formin cross section of the shank, and above said rounded portion the sidesof the jaw are reduced so as to iorm a web, 17, with shoulders 1S at thesides thereabove. A hole is made through the head from edge to edgebelow the jaws to receive the shank l-i and rounded portion 1G oi theadjustable jaw.

19 designates a recess formed through the head from side to side toreceive the milled nutv 20, having an interiorly threaded hole ier-medthrough it to receive the threaded shank 14, a slot being formed abovethe hole made for said shank for the reception of the web 17 of theadjustable jaw, the shoulders 18 resting on the faces 2l of the headwhich lie at a right angle to the plane of the faces 15 and 22 oi thejaws. Under this construction it will be Seen that by turning the millednut 20 the shank 14 and consequently the jaw 13 may be adjusted nearerto or iartlier from the fixed jawlO, for reasons Well understood.

An interiorly screw-threaded hole 23 is iormed in the hea d near theouter edge at a point where it intersects the slot made for thereception of the web 17 of the movable jaw and the outlet portion ot thelatter is slotted from its outer edge inward, as at 24. A screw, 25, istapped in the hole 23, the shank of which screw enters the slot 24 whenthe jaw 13 is adjusted outward or away from the jaw 10, and so limitsthe extent oi' the opening oi the jaws. This is an important feature ofthe invention, since it not only prevents the adjustable jaw from beingdisengaged from the head but prevents it from being adjusted so faroutward that its bearing in the head would be insuflicient to sustain itit the use oi the wrench were undertaken under the circumstances andconsiderable power were exerted on the handle.

An open-ended wrench comprising a head provided with a fixed jaw, anadjustable jaw having a shank extending at a right angle from its ownface and toward the face of the Iixed jaw, and movable in the head toadjust it with respect to the fixed jaw, the base of the adjustable jawbeing reduced on its sides below the jaw proper and on a plane parallelwith its shank, forming a web provided with a slot opening through theouter end of the weby a screw engaged in the slot to prevent the movablejaw and its head from being adjusted out of connection with the head,and a single handle integrally connected with the head and extending ina direction slightly inclined from the plane of the faces of the jaws.

ln testimony whereof, I affix my signature, in presence of twowitnesses.

(YRUS S. VAUGHN.

Witnesses Ci-Lxs. SINGER, Jr., AUSTIN M. Horny, Jr.

